User Guide for the SIP-T27P IP Phone 
viii 
Key as Send..................................................................................................................... 30 
Phone Lock....................................................................................................................... 31 
Audio Settings .................................................................................................................... 34 
Volume ............................................................................................................................. 34 
Ring Tones........................................................................................................................ 35 
Contact Management....................................................................................................... 37 
Directory........................................................................................................................... 37 
Local Directory ................................................................................................................ 39 
Blacklist ............................................................................................................................ 50 
Remote Phone Book....................................................................................................... 52 
Call History Management ................................................................................................ 54 
System Customizations...................................................................................................... 56 
Logo Customization ........................................................................................................ 56 
Headset Use.................................................................................................................... 57 
DSS Keys .......................................................................................................................... 59 
Account Management ................................................................................................... 71 
Dial Plan........................................................................................................................... 73 
Emergency Number........................................................................................................ 79 
Live Dialpad .................................................................................................................... 80 
Hotline.............................................................................................................................. 81 
Basic Call Features................................................................. 83 
Placing Calls ....................................................................................................................... 84 
Answering Calls ................................................................................................................. 86 
Ending Calls........................................................................................................................ 87 
Redialing Numbers ............................................................................................................ 87 
Recent Call In Dialing ........................................................................................................ 88 
Auto Answer ....................................................................................................................... 89 
Auto Redial.......................................................................................................................... 90 
Call Completion ................................................................................................................. 91 
ReCall .................................................................................................................................. 93 
Call Mute............................................................................................................................. 93 
Call Hold/Resume............................................................................................................... 94 
Do Not Disturb (DND) ........................................................................................................ 95 
Call Forward ....................................................................................................................... 98 
Call Transfer ...................................................................................................................... 106 
Call Waiting ...................................................................................................................... 108 
Conference ....................................................................................................................... 108 
Local Conference.......................................................................................................... 108 
Network Conference .................................................................................................... 110 
Call Park ............................................................................................................................ 111 
Call Pickup ........................................................................................................................ 112 
Anonymous Call ............................................................................................................... 116 
Anonymous Call Rejection .............................................................................................. 117